Privilege Escalation Vulnerability in Keycloak by Red Hat
CVE-2026-3121

6.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak 26.4
Red Hat Build Of Keycloak 26.4.11
Red Hat Jboss Enterprise Application Platform 8
Red Hat Jboss Enterprise Application Platform Expansion Pack
Vendor
CVE Published:
26 March 2026

What is CVE-2026-3121?

A misconfiguration within Keycloak could allow administrators with the 'manage-clients' permission to exploit this flaw, equating it mistakenly to 'manage-permissions'. This situation enables unauthorized privilege escalation, granting access to roles, users, and other critical administrative tasks within the realm, particularly when admin permissions are activated at the realm level.

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Affected Version(s)

Red Hat build of Keycloak 26.4 26.4.11-1

Red Hat build of Keycloak 26.4 26.4-14

Red Hat build of Keycloak 26.4 26.4-14

References

https://access.redhat.com/errata/RHSA-2026:6477
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6478
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-3121
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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